The heat transfer assessment of a buried hot oil pipe is essential for the economical and safe transportation pipeline, where basis to determine temperature field surrounding quickly. This work proposes novel method efficiently predict pipe, which combines proper orthogonal decomposition (POD) backpropagation (BP) neural network, named POD-BP model. Specifically, BP network used establish mappi...

The pipe systems of hydropower plants are complex and feature special types various devices. When the Method Characteristics (MOC) is used, interpolation or wave velocity adjustment required, which may introduce calculation errors. second-order Finite Volume (FVM) was presented to simulate water hammer load-rejection process a plant with an air cushion surge chamber, has rarely been considered ...

Summary In this paper, a meshless numerical modeling method named mesh-free discrete fracture model (MFDFM) of fractured reservoirs based on the newly developed extended finite volume (EFVM) is proposed. First, matching and nonmatching point cloud generation algorithms are to discretize reservoir domain with networks, which avoid gridding challenges in traditional mesh-based methods. Then, taki...

Multiple-criteria decision-making (MCDM) that deals with multiple criteria in decision-making environments has been explicitly applied to various decision-making fields. Nevertheless, the critical issues of uncertainty and inaccuracy generally and gradually exists in the majority of the MCDM processes because of (1) prejudice and preference of decision-makers or experts as well as (2) the insuf...

We present a finite-volume formulation for the lattice Boltzmann method (FVLBM) based on standard bilinear quadrilateral elements in two dimensions. The accuracy of this scheme is demonstrated by comparing the velocity field with the analytical solution of the Navier-Stokes equations for time dependent rotating Couette flow and Taylor vortex flow. To demonstrate the flexibility of the scheme, w...

Multiple-criteria decision-making (MCDM) that deals with multiple criteria in decision-making environments has been explicitly applied to various decision-making fields. Nevertheless, the critical issues of uncertainty and inaccuracy generally and gradually exists in the majority of the MCDM processes because of (1) prejudice and preference of decision-makers or experts as well as (2) the insuf...

The outdoor ultra-high voltage (UHV) dry-type air-core smoothing reactors (DASR) of High Voltage Direct Current systems are equipped with a rain cover and an acoustic enclosure. To study the convective heat transfer between the DASR and the surrounding air, this paper presents a coupled model of the temperature and fluid field based on the structural features and cooling manner. The resistive l...

Abstract CFD is a numerical approach used to solve fluid problems. In the simulation process, meshing stage crucial produce high accuracy. Meshing process where geometric space of an object broken down into many nodes translate physical components that occur while representing object’s shape. The research objective was analyze characteristics mesh technique in Finite Volume Method (FVM) using R...

Peristaltic flow is important in many biological processes, including digestion, and forms an component of any silico model the stomach. There a clear need to verify simulations such flows. An analytical solution was identified that can be used for verification, which gives equation net volumetric over cycle applied sinusoidal wall motion. Both smooth particle hydrodynamics (SPH) code (from CSI...